Re: [patch 09/11] perf_event_open.2: 4.1 add PERF_RECORD_ITRACE_START

[Michael Kerrisk (man-pages)]

On 07/23/2015 07:15 PM, Vince Weaver wrote:
> 
> 
> This manpage patch relates to the addition of the PERF_RECORD_ITRACE_START
> record type in the following commit:

Thanks, Vince. Applied.

Cheers,

Michael


> 	commit ec0d7729bbaed4b9d2d3fada693278e13a3d1368
> 	Author: Alexander Shishkin <alexander.shishkin@xxxxxxxxxxxxxxx>
> 
> 	perf: Add ITRACE_START record to indicate that tracing has started
> 
> 	Signed-off-by: Alexander Shishkin <alexander.shishkin@xxxxxxxxxxxxxxx>
> 	Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>
> 	Cc: Borislav Petkov <bp@xxxxxxxxx>
> 	Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx>
> 	Cc: H. Peter Anvin <hpa@xxxxxxxxx>
> 	Cc: Kaixu Xia <kaixu.xia@xxxxxxxxxx>
> 	Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
> 	Cc: Mike Galbraith <efault@xxxxxx>
> 	Cc: Paul Mackerras <paulus@xxxxxxxxx>
> 	Cc: Robert Richter <rric@xxxxxxxxxx>
> 	Cc: Stephane Eranian <eranian@xxxxxxxxxx>
> 	Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
> 	Cc: acme@xxxxxxxxxxxxx
> 	Cc: adrian.hunter@xxxxxxxxx
> 	Cc: kan.liang@xxxxxxxxx
> 	Cc: markus.t.metzger@xxxxxxxxx
> 	Cc: mathieu.poirier@xxxxxxxxxx
> 	Link: http://lkml.kernel.org/r/1421237903-181015-15-git-send-email-alexander.shishkin@xxxxxxxxxxxxxxx
> 	Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
> 
> 
> Signed-off-by: Vince Weaver <vincent.weaver@xxxxxxxxx>
> 
> diff --git a/man2/perf_event_open.2 b/man2/perf_event_open.2
> index 19c5c23..8ef9ec6 100644
> --- a/man2/perf_event_open.2
> +++ b/man2/perf_event_open.2
> @@ -2505,6 +2505,29 @@ buffer size.
>  if set then the data returned has overwritten previous data.
>  .RE
>  .RE
> +.TP
> +.BR PERF_RECORD_ITRACE_START " (since Linux 4.1)"
> +\" ec0d7729bbaed4b9d2d3fada693278e13a3d1368
> +This record indicates which process has initiated an instruction
> +trace event, allowing tools to properly correlate the instruction
> +addresses in the AUX buffer with the proper executable.
> +
> +.in +4n
> +.nf
> +struct {
> +    struct perf_event_header header;
> +    u32 pid;
> +    u32 tid;
> +};
> +.fi
> +.RS
> +.TP
> +.I pid
> +process id of the thread starting an instruction trace.
> +.TP
> +.I tid
> +thread id of the thread starting an instruction trace.
> +.RE
>  .RE
>  .SS Overflow handling
>  Events can be set to notify when a threshold is crossed,
> 


-- 
Michael Kerrisk
Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/
Linux/UNIX System Programming Training: http://man7.org/training/
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